Use AI to auto-correlate the words of human-translated texts?
You are basically describing the way Google Translate works.

There has been a lot of research in text alignment in the area of multi-lingual corpus linguistics. An early paper (with sourcode) is Gale and Church's A Program for Aligning Sentences in Bilingual Corpora (PDF). 

In linguistics these are called parallel texts. On the wikipedia page you will find links to a number of alignment programs which attempt to solve that issue.